* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
.container {
  display: flex;
  gap: 1rem;
}
nav {
  width: 15rem;
  background-color: #dfdfdf;
  ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 5px;
    li {
      background-color: #444;
      padding: 0.5rem 1.5rem;
      a {
        text-decoration: none;
        color: #fff;
      }
    }
  }
}

main {
  width: 90%;
  height: 768px;
  background-color: #ddd;
}
